Boring-machine



C. A. SMITH.

BORING MACHlNE.

APPLICATION man JULY 15.1919.

1,394,76 Patented Oct. 25, 1921..

6SHEETSSHEET1. l I @91. 47 96 .29 95 WITNESSE INVENTOR C A6M/7H, 6% 9 BYATTORNEYS C. A. SMITH.

BORING MACHINE.

APPLICATION man JULY 15.1919.

Patented Oct 25, 1921.

6 SHEET5SHEET 2.

IN/N GAS/WITH WITNESSES W ATTORNEYS c. A. SMITH.

BORING MACHINE.

APPLICATION FILED JULY 15,1919.

1,394,766, Patented Oct. 25, 1921 6 SHEETS-SHEET 3.

WI T NESSE ,9. 6 4 7,

ATTORNEYS C. A. SMITH.

BORING MACHINE.

APPLICATION FILED JULY 15.1919.

1,894,766, Patented Oct. 25, 1921..

7 7 5 SHEETS-SHEET 4.

fiTTORNEYS c. A. SMITH. BORING MACHINE.

APPLICATION FILED JULY 15.1919.

1,394,766. Patented Oct. 25, 1921.

6 SHEETSSHEET 5- 4 TTORNEYS C. A. SMITH.

BORING MAVCHINE. APgucmoN FILED JULY 15,1919.

1,394,766. Patented Oct. 25, 1921..

6 SHEETS-SHEET 6- i 1 E 11 t INVENTOR WITNESTES I angmm'w,

A TTORNEYS cans stares FATENT GFFECFQ.

I CHARLES ALVAH SMITH, OF 'IBBATTLEBORO, VERMONT.

scams-MACHINE.

ee-ares.

Application filed July 15,

To all whomit may concern: Be it known that I, CHARLES A. SMITH, acitizen of the United States. and a resident of Brattleboro, in thecounty of Windham and State of Vermont, have invented certain new anduseful Improvements in Boring-Machines, of which the following is aspecification.

This invention relates of the multi-drill type.

An import-ant object of the invention is to provide a boring machinehaving novel means whereby the vertical and horizontal drills may besimultaneously fed to the work for drilling the hole at different anglesinto the work.

The invention forming the subject matter of this application is alsoprovided with novel means whereby the pieces to be 0perated upon are fedto and held in position while being drilled. I

In the accompanying drawings, form ng a part of this application and inwhich like numerals are employed to designate like parts throughout thesame- Figure 1 is a front elevation proved boring machine. j

Fig. 2 is a vertical sectional view through the same.

Fig. 3 is a side elevational View, the view being taken from theopposite side of the machine, a driving pulley 57 being shown on theopposite side of the machine from that shownin Figs. 1, 4 and 5.

Fig. 4 is a fragmentary front elevation of the machine, the magazinebeing omitted for the purpose of clearness.

Fig. 5 is a rear elevation illustrating the operative means for themachine.

Fig. 6 is a side view illustrating the operating means for the machine,driving pul ley 57 being shown as in .F ig. 3.

In the drawings wherein for the purpose of illustration is shown apreferred embodiment of the invention, the numeral 10 generallydesignates the frame which consists of four spaced parallel uprights 11and upper'and lower cross pieces 12 and 13 respectively. The crosspieces 12 which extend from the front to the rear of the frame arejoined intermediate their ends by a connecting cross piece 14:. The rearends of the cross pieces 12 are connected by a transversely extendingstrip 15. i i

As illustratedin Figs. 1 and 2 a vertical to boring machines of theimshaft 16 is rotatably connected to one of the Specification of LettersPatent.

Patented Oct. 25, 1921.

1919. Serial No. 310,923.

uprights 11 by means of a pair of bearing brackets 17 apertured earswhich rotatably receive the shaft. A triangular bracket 18 is rigidlysecured on the upper portion of the shaft 16 and supports a tablegenerally designated by the numeral 20 for swinging movement about theaxis of the shaft 16. The table generally designated by the numeral 20may be securely held in position directly in front of the frame by meansof a locking device designated by the numeral 21. When the lockingdevice 21 is released, the table 20 may be swung about the longitudinalaxis of the shaft. The table 20 may be adjusted vertically by mean of anadjusting screw 23 arranged in longitudinal alinement with the shaft 16and threaded through an ear 24 rigidly secured to one of the uprights11. The adjusting screw 23 may be manually rotated by means of a wheel25 and may be secured in an adjusted position by means of a lock nut 26.The upper end of the adusting screw 23 is provided with antifrictionelements 27 engaged with the lower .end of the shaft 16 so that theshaft 16 may rotate independently of the adjusting screw 23.

A movable platform 29 is mounted upon the table 20 and is rovided with aplurality of superposed bloclis 30 which are as illustrated in Fig. 2arranged to form a seat for strips of wood 31 which are singlydischargedfrom a magazine generally designated by the numeral 32. It will beobserved that the uppermost block 30 hasone longitudinal edge portionspaced from the adjacent longitudinal edge portion of the intermediateblock so as to define a seat for snugly receiving the strip 31 as it isdischarged from the mega zine. Then the movable platform 29 moves to itsadvanced position, a piece of work is mounted upon a seat defined by theuppermost and intermediate blocks and is carried which are formed withalined The movable platform is moved back and forth in the proper orderby means of a llnk 35 which has its upper end portion threaded through anut 36 carried by a bracket 37 depending from the extended portion ofthe platform. The lower or rear end portion V forth the platform 29 isreciprocated for delivering the pieces of work 31 to a position wherethey may be drilled. By rotating the link 35 within the nut 36 itpossible to vary the effectiveness of the link 35 for regulating thereciprocation of the platform.

The shaft 39 is rotatably supported by means of struts 46 which join theupper and lower sections of the table. The means for rocking the shaft39 includes a chain 41 which is trained about a pulley L2 keyed orotherwise secured to the extended end portion of the shaft 39. hen anupward pull is exerted on a link l3 connected to the upper end of thechain the wheel 42 and consequently the shaft 39 will be rotated to alimited degree whereby'the platform will be moved across the table toits operative position or to a position where the work may be operatedupon.

As illustrated in Fig. 3, the upper end of the link 43 is connected to aradial arm ll rigidly secured toa rock shaft 4:5. The rock shaft 45rotatably supported by bearings i6 which are mounted upon the cross beam14. When the rock shaft 45 is rotated the arm 4A will be elevated'forimparting a corresponding movement to the link As the lower end of thechain 41 is connected to the wheel 42, the wheel and consequently theshaft 39 will be rotated to a limited deree.

b A second arm 47 is secured on the shaft 45 in connection with a link4: which is joined with the terminal portion of a crank arm 49 securedon a rock shaft 50. The rock shaft 50 .is rotated by means of a secondcrank arm 51 which has a roller 52 in contact with cam The cam 53 isrigidly secured on a shaft 54: and when they cam is rotated, through therotation of the shaft 54, the lobe on the same will engage the roller 52and thereby move the radial arm 51 downwardly. This downward movementthus imparted to the crank arm 51 will rock the shaft 50 and therebycause the arm 49 to be moved downwardly for imparting a correspondingmovement to'the link d8. Therefore, when the shaft is retated, the lobeon the cam 53 will operate the bell crank formed by the arms a9 and 51for rocking the other bell crank formed by the arms 44: and 47. Theoperation of the upper bell crank formed by the arms 44 and 47 willelevate the link 43 for imparting a sliding motion to the platform 29.

With. reference to Fig. 5 it will be observed that the shaft 54 on whichthe cam 53 is arranged has connection at one end with a train of gears55. The shaft 56 which is connected to the gears is provided with apulley 57 which has connection with a belt 58. The belt 58 is trainedabout a conical pulley 59 on a shaft 60 which-is driven by means of abelt trained about a pulley 61.

The magazine which is generally designated by the numeral 32 is carriedby a pair of frames 63 which are secured to the lower ends of hangers 6These hangers 64 have pivoted to their lower ends bars c4 and the frames63 have slotted flanges each clamped by a thumb screw to said bars 64.The magazine 32 may be adjusted vertically by means of adjusting screws65 which contact with cars 66 projecting from the ends of the slottedflanges of the frames. The lower portions of the adjusting screws 65 arethreaded through ears or lugs 67 rigidly connected withthe ends of thebars 64:.

As previously stated, when the platform 29 is in its retracted or rearposition, one piece of work 31 drops from the magazine onto the seatformed by the upper and intermediate blocks 30 and said seat is advancedto a point beneath the horizontal portions of stop arms 68. The stoparms 68 which properly position the pieces of work are adjustabletransversely of a set up bar 69 which extends transversely The set upbar 69 is adjustable with relation to the magazine by means of bolts 70which extend through stationary blocks 71. The horizontal portions ofthe stop arms 68 overhang the pieces of work and also the uppermostblocks 30 so that the pieces of work are securely held in a position tobe operated upon by the several drills. V

The drilling mechanismincludes a pair of spaced parallel verticallyarranged guide roos 70 which are secured at their upper ends to brackets71 connected to the cross piece 1st and at their lower ends to brackets72 secured to the uprights 11. The guide rods 70 slidably support averticall movable carriage designated by the numeral 73. The ends of thecarriage 73 are provided with vertically alined bearings 7% whichslidably receive'the rods 70 whereby the carriage may move upwardly anddownwardly during the operation of the machine.

As illustrated in Figs. 2 and 3, a yoke 76 is arranged'in frontof thecarriage and is adjustably connected to the same by means of a bolt 7 7whichpasses through a slot 78 in the carriage. With reference to Fig. 1

of the frame.

it will be observed that the bracket 7 6 may be adjusted transversely ofthe carriage so that a chuck 79 mounted on a spindle 80 may be engagedwith the work at any desired point. The spindle is rotatable withinalined bearings 81 and is provided at its upper end with a wheel 82. Thewheel 82 is gradually thickened toward its medial portion and has a belt84 connected thereto which belt is trained about a drum 85. The drum 85is provided at one end with a pulley 86 about which a belt 87 istrained. As illustrated in Fig. 5 the belt 87 which is continuous istrained about the wheel on the shaft 60. As further illustrated in Fig.5, the member 85 is in the nature of a drum and extends entirely acrossthe frame so that the belt 84 will move transversely on the drum 85 whenthe spindle is moved transversely of the frame. In this manner, the belt84 extends in a straight line behind the drill. The drill is carried bythe chuck 79 so that as the carriage 73 is lowered a hole will bedrilled in the work.

In operation the carriage is raised and lowered by means of a link 90which is connected at its upper end to a crank arm 91 having alongitudinal slot 92 for the reception of a block 93 which is adjustablein the slot to determine the throw given by arm 91. The block isprovided with a pivot element 94 which is connected to the link 90 sothat as the arm 91 is moved upwardly, the link will not be distorted andwill be elevated. The effective length of the link 90 may be varied bymeans of an adjusting nut 95 which is threaded on the upper end of thelink 90. The slotted arm 91 is secured on a rock shaft 96 which isrotatably carried by the bearings 97 which are secured onto the crosspiece 14 in the manner illustrated. A second crank arm 98 is secured onthe rock shaft 96 and has connection with a link 99 which extendsdownwardly and is pivotally connected to the terminal portion of a crankarm 100. The crank arm 100 has rigid connection with a shaft 101rotatably carried by a bearing bracket 102. A second crank arm 103 isrigidly secured on the rock shaft 101 and has its end provided with aroller 104 arranged in the path of travel of a lobe formed on a cam 105.The cam 105 is rigidly secured on the shaft 54 and serves as means formoving the crank arm 103 downwardly at intervals, whereby the link 99will be periodically drawn downwardlyf This downward movement thusimparted to the link 99 elevates the arm 91 for moving the same upwardlyso that a vertical upward movement will be imparted to the carriage 73.The weight of the carriage 73 and the spindle is greater than the link99.

When the lobe on the cam 105 passes the roller 104, the carriage 73 isfree to move downwardly so that the drill carried by the chuck willenter the wood.

A second carriage is arranged horizontally and is provided with bearings111 rods 112 which are stationary which are slidable upon a pair ofhorizontally arranged guide rods 112. The guide mounted upon brackets112. As illustrated in F 2, a ycke 113 simila yoke 76 is mounted on ahorizontal carriage 110 and is provided with a spindle 114 which carriesa. chuck 115. The chuch of course carries the usual drill for engagingthe work. A pulley wheel 116 is secured on the spindle 114 and hasconnection with a belt 117 trainee about a drum 118. The drum 118extends entirely across the lower portion of the frame and hasconnection with a belt 119. The belt 119 has connection the shaft 60through the medium of a pulley wheel 120.

The spindle 114 moves longitudinally as well as rotatably and thelongitudinal morein construction to the with r ment of the spindle is ofcourse accompanied by a slight stretching of the belt 11?. The meansemployed for reciprocating the horizontal carriage 110 includes aslotted arm 120 which is connected to the rock shaft 101.

The slotted arm 120 receives a block 121 to which a link 122 isconnected. The forward portion of the link 122 has pivotal connec tionwith the rear portion of the carriage 110.

In the operation of the improved boring machine, the pieces of work arefed singly from the magazine onto the seat formed by the block 30. Theseat formed by the block 30 of course receives the lowermost piece ofwork when the platform is in its retracted position. As the plat-formadvances in the direction of the horizontal drill, it car ries with it apiece of work which is moved beneath the horizontal portions of the stoparm 68. When the platform reaches its advanced position, the work issecurely held in place and the vertical and horizontal drills advanceand thereby provide the piece of work with holes. Upon the completion ofthe boring operation, the drills are withdrawn through the rearwardmovement or" the vertical and horizontal carriages. The cam 53 of courseis the means by which the platform is slidably moved and when the lobeon this cam passes the roller 52, a coiled spring 130 mounted on theshaft 39 returns the platform to its retracted position.

The vertical and horizontal carriages are of course timed so as to feedthe drills to the work at the proper time during the operation of themachine.

Having thus described the invention what is claimed is 1. A boringmachine comprising a tool supporting frame, a table swingingly connectedat one end to said tool supporting frame for movement about a verticalaxis to and from the same, a reciprocating platform mounted on saidtable, and a platform re- Cir ciprocating device mounted in part on saidtable and in part on said frame and having means whereby the same isoperative regardless of the position of said table.

2. it boring machine comprising a tool supporting frame, a tableswingingly connected at one end to said tool supporting frame formovement about a vertical axis to and from the same, a reciprocatingplatform mounted on said table, a platform reciprocating device mountedin part on said table andin part on said frame and having means wherebythe same is operative regardless of the position of said table, and amagazine carried by said frame above said platform.

3. A boring machine comprising a tool supporting; frame, a tableswingingly connected at one end to said tool supporting frame formovement about a vertical axis to and from the same, a reciproiiatingplatform mounted on said table, a platform reciprocating device mountedin part on said table and in part on said frame and having means wherebythe same is operative regardless of the position of said table, amagazine carried b said frame above said platform, and a locking devicefor one end of said table.

A boring machine comprising a tool supporting frame, a magazinesupported by said frame, a table swingingly connected to said frame andhaving means for feeding blanks from said magazine and mounted to swinglaterally with said feeding means from beneath said magazine.

A boring machine comprising a tool said frame and having means blanksfrom said magazine and mounted to swing laterally with said feedingmeans from beneath said magazine, and a drilling mechanism carried bysaid frame. 7

6. A boring machine comprising a frame, a table carried thereby andswingable on a vertizalaxis away from said frame, a shaft rotatablrcarried-in the'table, a platform movable on the table, means connectingthe shaft and the platform, means to rock the shaft in one directioncomprising a flexible roan on to a moving part of-the frame, permittingthe swinging of the table Without affecting the operation of the shaftrocking means, and a spring associated with the shaft for rocking thesame in the opposfe direction. 7

T. A boring machine comprising a frame, a table carried thereby andsWingable on a vertical axis ae-ay from said frame, a shaft carried bysaid table, a platform mounted for sliding movement on the table, a linkconnected to saidplatform, a crank connected to said shaft and to saidlink, means for rocking said shaft in one direction comprising aflexible connection to a movable part on the frame, permitting theswinging of the table without affecting the operation of the shaftrocking means, and a spring for returning the platform to its retractedposition. a, 7

CHARLES ALVAH SMITH.

